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Abstract #2637

Low-Loss Adjustable Networks for Automated Matching of Transmit Coils

Giorgos Katsikatsos1, Klaas Paul Pruessmann1

1Institute for Biomedical Engineering, ETHZ, Zurich, ZH, Switzerland

A low-loss, high power handling, custom-made capacitor is used a building unit for an automated L-matching-network controlled by an external computer. The capacitors are adjusted mechanically by piezoelectric motors. Each L-network is characterized completely by its S-matrix and those S-matrices are used in the analytical solution of the invert problem. The result is highly reproducible since it achieves matching for arbitrary loads.

Keywords

able accordingly account achieve achieved adjacent adjust adjustable allow analytically arbitrary array arrays assumption automated automatically autonomously axis biomedical breakdown breakdowns built capacitance capacitor capacitors care caused characterization chosen coil coils combinations computer connected connection connectors consist constant constrains control controlled copper coupled cover deposition designed deviation dielectric distance distinct double edges electrical element external field fixed forming forth frequency friction galvanic grid highly identical impedance inherent inner instrumented integration interpolated intervention introduced lack leakage limitations load loads long loss losses lossy match matching matrices matrix measured mechanical merged mismatched moreover motor motors move moving needs network networks opposite output part performance piece piezoelectric plate plates polished pool positioning positions power prevent printed problem procedure processes proper pushed real reduced reducing remotely responsible rest sample scale scanner series sided since solved span specifications square substrate success suggests surface system taken tips translates translational transmit unit variable voltage walls whole wide withstand